JP3246977U - A high-power riveting power unit without a gearbox - Google Patents

Abstract

[Problem] To provide a high-power riveting power unit without a reducer, which is relatively small in volume, light in weight, easy to transport and use, and capable of improving stability, reducing energy consumption, reducing noise, and enhancing practicality. [Solution] The device includes a pressure regulating module (100), a pressure module (200), a supply mechanism (300), and a reel module (400). The pressure regulating module includes a planetary roller screw. A first pressure sensor is connected to the lower end of the planetary roller screw, a first thrust bearing and a second thrust bearing are respectively attached to the lower end of the first pressure sensor, and a second pressure sensor is connected to the lower end of the second thrust bearing. A first timing pulley is connected to the lower end of the planetary roller screw. Stepless adjustment operation can be realized, enabling high-precision riveting operation for rivets and improving riveting quality. [Selected Figure] Figure 1

Description

This invention relates to a riveting power unit, and more specifically to a high-power riveting power unit that does not have a reduction gear.

A riveting machine, also known as a riveter, riveting device, or riveting machine, is a new type of fastening device developed based on the principle of cold rolling. It refers to a piece of machinery that fastens items together using rivets, and solves the problem that some sheet metal parts cannot be riveted by directly setting them into a general slope-type casting machine after bending.

Most conventional crimping devices use pneumatic, hydraulic or air-oil boosting methods, and their characteristic is that they can only rivet at a fixed speed and set pressure. The disadvantages of this are that they cannot adjust the riveting speed steplessly, the pressure is unstable, they are large in volume, they are excessively heavy, when selecting a robot, only high-load robot operations can be selected, and they are not suitable for lightweight production.

In addition, the pneumatic noise is loud, the device volume is very large, it is not suitable for automated production lines, the energy consumption is large, and the pollution is serious. Based on this situation, it is necessary to provide a power unit that can realize stepless adjustment, has stable pressure, appropriate volume, and is light in weight, which is convenient for lightweight production, has low pneumatic noise, and reduces pollution.

This invention provides a high-power riveting power unit without a reducer. The purpose is to solve the problems that the pressure of existing power units is fixed and the objective of stepless adjustment cannot be achieved, which affects the accuracy and quality of riveting, and at the same time leads to large volume, heavy weight and poor stability.

To achieve the above object, the present invention provides a power unit for a high-power riveting machine without a reducer, which includes a pressure adjustment module, a pressure module, a feed mechanism, and a reel module. The rivet used is, for example, a self-piercing rivet (SPR).

The pressure regulating module includes a planetary roller screw. A first pressure sensor is connected to the lower end of the planetary roller screw, a first thrust bearing and a second thrust bearing are respectively attached to the lower end of the first pressure sensor, and a second pressure sensor is connected to the lower end of the second thrust bearing.

A first timing pulley is connected to the lower end of the planetary roller screw, a timing belt is wound around the side of the first timing pulley, and a second timing pulley is provided inside the first timing pulley so as to wrap the first timing belt around it.

A connection bearing is connected to the lower end of the first timing pulley, a connection end is attached to the lower end of the connection bearing, and a main rod is installed at the lower end of the connection end. A connection base is connected to one side of the first timing pulley, a connection rod is inserted into the upper end of the connection base, and a tension pulley is fitted onto the side of the connection rod.

The pressure module includes a first transmission rod attached to the lower end of the planetary roller screw, a sleeve is fitted onto the side of the first transmission rod, a second transmission rod is fixedly connected to the lower end of the first transmission rod, a pressure rod is connected to the lower end of the second transmission rod, an output head is connected to the lower end of the pressure rod, and an insertion tube and an insertion head are fixedly connected to the lower end of the output head.

The supply mechanism includes a vertical plate. A limit sensor is connected to one side of the vertical plate, a supply tube is connected to the lower end of the vertical plate, and a first limit block, a second limit block, and a third limit block are respectively connected to the lower end of the supply tube. A clamp block is connected between the first limit block and the second limit block. A supply groove is provided on one side of the supply tube, a supply sheet is inserted into the supply groove, and a pressure head body is connected to the lower end of the supply tube.

The reel module is attached to one side of the pressure adjustment module.

In a preferred embodiment of the present invention, the reel module includes a vertical pole, a die is connected to one side of the lower end of the vertical pole, a reel is rotatably connected to one side of the upper end of the vertical pole, a guide tube is connected to the surface of the vertical pole, and a buffer base is movably connected to the surface of the vertical pole. A cylinder is fixedly connected to the lower end of the buffer base, and a connecting rod is connected to the output end of the cylinder.

In a preferred embodiment of the present invention, the first timing pulley, the timing belt, and the sides of the second timing pulley are all covered with a protective casing. A connecting plate is fixedly connected to the lower end of the protective casing, the connecting base is attached to the upper end of the connecting plate, and the tension pulley contacts the timing belt.

In a preferred embodiment of the present invention, guide blocks are fixedly connected to both sides of the main rod, and the main rod is inserted into the first and second transmission rods.

As a preferred embodiment of the present invention, a guide groove is provided on both sides of the second transmission rod, and the guide block is slidably connected inside the guide groove.

In a preferred embodiment of the invention, an output spring is mounted inside the output head.

In a preferred embodiment of the invention, a mounting block is fixedly connected to the side of the vertical plate.

Compared to conventional technology, the advantages of this invention are as follows:

First, when in use, the servo motor first rotates the second timing pulley, and the timing belt can be driven in combination with the first timing pulley. At this time, the timing belt drives and rotates the planetary roller screw, causing the planetary roller screw to move linearly up and down. When the planetary roller screw moves downward and receives resistance, the first thrust bearing, the second thrust bearing, and the pressure sensor attached to the upper end of the planetary roller screw transmit the reverse force received by the planetary roller screw to the pressure sensor, and the pressure applied to the pressure head body is detected. When the pressure applied to the pressure head body is too large, the connection base is controlled to separate the connection rod and the tension pulley on its side from the timing belt, thereby reducing the pressure on the timing belt, thereby controlling the tension of the timing belt. This allows the output power of the power unit to be adjusted, and compared with the power units in the prior art, the present invention not only stabilizes the pressure, but also realizes stepless adjustment operation, which enables high-precision riveting operation for rivets and improves the quality of riveting.

Secondly, by combining the first limit block with the second limit block, and the third limit block with the supply groove, the rivets on the supply sheet can be continuously and automatically supplied, thereby improving the supply efficiency. In addition, the structures such as the upright, die, reel, and buffer base can not only make the volume relatively small and the weight light, but also significantly strengthen the stability of the power unit, and at the same time, the presence of the first thrust bearing, the second thrust bearing, and the connecting bearing can reduce the friction force of the power unit, reduce power loss, save energy consumption, improve stability, and reduce noise. Compared with power units in the prior art, the present invention has a relatively small volume, a light weight, and is easy to transport and use due to the combination of the above structures, and at the same time, it is possible to improve stability, save energy consumption, and reduce noise, thereby improving the practicality of the power unit.

FIG. 2 is a schematic diagram of the overall structure of the present invention; 2 is an exploded view of the pressure regulating module structure of the present invention; FIG. FIG. 2 is an exploded view of the structure of a tension pulley according to the present invention; FIG. 2 is an exploded view of the structure of the pressure module in accordance with the present invention; FIG. 2 is an exploded view of the structure of the feeding mechanism of the present invention; FIG. 2 is an exploded view of the structure of a reel module according to the present invention;

The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be understood that the embodiments described herein are only a part of the embodiments of the present invention, and are not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort fall within the scope of protection of the present invention.

Referring to Figures 1 to 3, the present invention provides a high-power precision servo riveting power device without a reducer, which includes a pressure adjustment module 100, a pressure module 200, a feed mechanism 300, and a reel module 400. The rivet used is, for example, a self-piercing rivet (SPR).

The pressure regulating module 100 includes a planetary roller screw 101. A first pressure sensor 102 is connected to the lower end of the planetary roller screw 101, a first thrust bearing 103 and a second thrust bearing 104 are respectively attached to the lower end of the first pressure sensor 102, and a second pressure sensor 105 is connected to the lower end of the second thrust bearing 104.

A first timing pulley 106 is connected to the lower end of the planetary roller screw 101, a timing belt 107 is wound around the side of the first timing pulley 106, and a second timing pulley 108 is provided inside the first timing pulley 106 so as to wrap around the first timing belt 107.

A connection bearing 109 is connected to the lower end of the first timing pulley 106, a connection end 110 is attached to the lower end of the connection bearing 109, and a main rod 120 is installed at the lower end of the connection end 110. A connection base 140 is connected to one side of the first timing pulley 106, a connection rod 150 is inserted into the upper end of the connection base 140, and a tension pulley 160 is fitted onto the side of the connection rod 150.

The pressure module 200 includes a first transmission rod 201 attached to the lower end of the planetary roller screw 101, a sleeve 202 fitted onto the side of the first transmission rod 201, a second transmission rod 203 fixedly connected to the lower end of the first transmission rod 201, a pressure rod 204 connected to the lower end of the second transmission rod 203, an output head 205 connected to the lower end of the pressure rod 204, and an insertion tube 206 and an insertion head 207 fixedly connected to the lower end of the output head 205, respectively.

The supply mechanism 300 includes a vertical plate 301, a limit sensor 302 is connected to one side of the vertical plate 301, and a supply tube 303 is connected to the lower end of the vertical plate 301. A first limit block 304, a second limit block 305, and a third limit block 306 are each connected to the lower end of the supply tube 303.

A clamp block 307 is connected between the first limit block 304 and the second limit block 305. A supply groove 308 is provided on one side of the supply tube 303, a supply sheet 309 is inserted into the supply groove 308, and a pressure head body 310 is connected to the lower end of the supply tube 303.

The reel module 400 is attached to one side of the pressure adjustment module 100.

In a specific embodiment, the installed pressure adjustment module 100, pressure module 200, supply mechanism 300, and reel module 400 allow for stepless adjustment and high-precision riveting of rivets, not only improving the quality of riveting, but also making the device relatively small in volume and light in weight, easy to transport and use, and capable of improving stability, reducing energy consumption, and reducing noise, thereby enhancing the practicality of the power unit.

When in use, the servo motor 130 first rotates the second timing pulley 108, which in combination with the first timing pulley 106 drives the timing belt 107. At this time, the timing belt 107 drives and rotates the planetary roller screw 101, which moves linearly up and down. At this time, the first thrust bearing 103, the second thrust bearing 104, and the first pressure sensor 102 attached to the lower end of the planetary roller screw 101 receive a resistance force as the planetary roller screw 101 moves, and the reverse force received by the planetary roller screw 101 is transmitted to the first pressure sensor 102 and the second pressure sensor 105, and the pressure applied to the pressure head body 310 is detected.

If the pressure applied to the pressure head body 310 is too large, the connection base 140 moves the connection rod 150 and the tension pulley 160 on its side away from the timing belt 107, thereby reducing the pressure on the timing belt 107, and thus the tension of the timing belt 107 can be controlled. This allows the output power of the power unit to be adjusted, achieving the purpose of stepless adjustment of the operation. This allows for high-precision riveting operations and improves the quality of riveting.

Referring to FIG. 6, the reel module 400 includes a vertical pillar 401, a die 402 is connected to one side of the lower end of the vertical pillar 401, and a reel 403 is rotatably connected to one side of the upper end of the vertical pillar 401. A guide tube 404 is connected to the surface of the vertical pillar 401, and a buffer base 405 is movably connected to the surface of the vertical pillar 401. A cylinder 406 is fixedly connected to the lower end of the buffer base 405, and a connecting rod 407 is connected to the output end of the cylinder 406.

In a specific embodiment, the combination of the upright 401, die 402 and buffer base 405 is not only small in volume and light in weight, but also enhances the stability of the power unit, making it easy to transport and use, thereby improving the convenience of using the power unit.

Referring to Figures 2 and 3, the sides of the first timing pulley 106, the timing belt 107, and the second timing pulley 108 are all covered by a protective casing 111. A connecting plate 112 is fixedly connected to the lower end of the protective casing 111, a connecting base 140 is attached to the upper end of the connecting plate 112, and the tension pulley 160 contacts the timing belt 107.

In a specific embodiment, the protective casing 111 is combined with the connecting plate 112 to protect the first timing pulley 106, the second timing pulley 108, and the timing belt 107, and the connecting plate 112 is used to position the connection base 140.

Referring to Figures 2 to 4, guide blocks 121 are fixedly connected to both sides of the main rod 120, and the main rod 120 is inserted into the first transmission rod 201 and the second transmission rod 203.

In a specific embodiment, the guide block 121 provides guiding and positioning effects when the planetary roller screw 101 descends, improving the accuracy and efficiency of riveting.

Referring to FIG. 4, guide grooves 211 are provided on both sides of the second transmission rod 203, and the guide block 121 is slidably connected inside the guide grooves 211.

In a specific embodiment, the combination of the guide groove 211 and the guide block 121 provides guidance and positioning for the main rod 120, preventing misalignment during riveting that could affect the quality and efficiency of riveting.

Referring to FIG. 4, an output spring 212 is installed inside the output head 205. In a specific embodiment, the output spring 212 is used for a buffer effect to prevent the planetary roller screw 101 from being damaged due to frequent riveting operations, which increases the cost loss.

Referring to FIG. 5, a mounting block 311 is fixedly connected to the side of the vertical plate 301. In a specific embodiment, the mounting block 311 can mount and fix the cylinder 406, improve the mounting stability, and make it easy to remove when necessary.

The operating principle is as follows: In use, the servo motor 130 is activated to rotate the second timing pulley 108, which in turn enables the first timing pulley 106 to drive the timing belt 107. The timing belt 107 then drives and rotates the planetary roller screw 101, controlling the planetary roller screw 101 to move linearly up and down.

The first thrust bearing 103, the second thrust bearing 104 and the first pressure sensor 102 attached to the lower end of the planetary roller screw 101 transmit the force received by the planetary roller screw 101 to the first pressure sensor 102 and the second pressure sensor 105 when the planetary roller screw 101 moves and receives a resistance force, and the pressure applied to the pressure head body 310 is detected. If the pressure applied to the pressure head body 310 is too large, the connection base 140 moves the connection rod 150 and the tension pulley 160 on its side away from the timing belt 107 to reduce the pressure on the timing belt 107, thereby controlling the tension of the timing belt 107 and achieving the purpose of stepless adjustment operation. This realizes high-precision riveting operation and improves the quality of riveting.

In this specification, terms expressing relationships such as first and second are merely used to distinguish one item or operation from another item or operation and do not necessarily require or imply any substantial relationship or sequence between those items or operations. Furthermore, the terms "comprise", "include", or any variation thereof may mean a non-exclusive inclusion. Thus, a process, method, article, or apparatus that includes a set of elements may include not only those elements but also other elements not expressly listed or may further include elements inherent to the process, method, article, or apparatus.

Although the embodiments of the present invention have been shown and described above, it should be understood that those skilled in the art can make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents.

This invention can be advantageously used as a high-power riveting power unit without a reduction gear.

100 Pressure regulating module 101 Planetary roller screw 102 First pressure sensor 103 First thrust bearing 104 Second thrust bearing 105 Second pressure sensor 106 First timing pulley 107 Timing belt 108 Second timing pulley 109 Connection bearing 110 Connection end 120 Main rod 130 Servo motor 140 Connection base 150 Connection rod 160 Tension pulley 111 Protective casing 112 Connecting plate 121 Guide block 200 Pressure module 201 First transmission rod 202 Sleeve 203 Second transmission rod 204 Pressing rod 205 Output head 206 Insertion tube 207 Insertion head 211 Guide groove 212 Output spring 300 Supply mechanism 301 Vertical plate 302 Limit sensor 303 Supply tube 304 First limit block 305 Second limit block 306 Third limit block 307 Clamp block 308 Feeding groove 309 Feeding sheet 310 Pressure head body 311 Mounting block 400 Reel module 401 Standing post 402 Die 403 Reel 404 Guide tube 405 Buffer base 406 Cylinder 407 Connecting rod

Claims (7)

The system includes a pressure adjustment module (100), a pressure module (200), a supply mechanism (300), and a reel module (400),
The pressure regulating module (100) includes a planetary roller screw (101), a first pressure sensor (102) is connected to a lower end of the planetary roller screw (101), a first thrust bearing (103) and a second thrust bearing (104) are respectively attached to a lower end of the first pressure sensor (102), and a second pressure sensor (105) is connected to a lower end of the second thrust bearing (104);
A first timing pulley (106) is connected to the lower end of the planetary roller screw (101), a timing belt (107) is wound around the side of the first timing pulley (106), and a second timing pulley (108) is provided inside the first timing pulley (106) so as to wind the first timing belt (107),
A connection bearing (109) is connected to the lower end of the first timing pulley (106), a connection end (110) is attached to the lower end of the connection bearing (109), a main rod (120) is installed at the lower end of the connection end (110), a connection base (140) is connected to one side of the first timing pulley (106), a connection rod (150) is inserted into the upper end of the connection base (140), and a tension pulley (160) is fitted onto the side of the connection rod (150),
The pressure module (200) includes a first transmission rod (201) attached to the lower end of the planetary roller screw (101), and a sleeve (202) is fitted on the side of the first transmission rod (201);
A second transmission rod (203) is fixedly connected to the lower end of the first transmission rod (201), a pressure rod (204) is connected to the lower end of the second transmission rod (203), an output head (205) is connected to the lower end of the pressure rod (204), and an insertion tube (206) and an insertion head (207) are fixedly connected to the lower end of the output head (205), respectively;
The supply mechanism (300) includes a vertical plate (301), a limit sensor (302) is connected to one side of the vertical plate (301), and a supply tube (303) is connected to the lower end of the vertical plate (301);
A first limit block (304), a second limit block (305), and a third limit block (306) are connected to the lower end of the supply tube (303), and a clamp block (307) is connected between the first limit block (304) and the second limit block (305);
A supply groove (308) is provided on one side of the supply tube (303), a supply sheet (309) is inserted into the supply groove (308), and a pressure head body (310) is connected to the lower end of the supply tube (303);
The reel module (400) is mounted on one side of the pressure adjusting module (100), thus providing a high-power riveting power device without a reducer. The reel module (400) includes a stand (401),
A die (402) is connected to one side of the lower end of the upright (401), a reel (403) is rotatably connected to one side of the upper end of the upright (401), a guide tube (404) is connected to the surface of the upright (401), and a buffer base (405) is movably connected to the surface of the upright (401);
The high-power riveting power device without a reducer as claimed in claim 1, characterized in that a cylinder (406) is fixedly connected to the lower end of the buffer base (405), and a connecting rod (407) is connected to the output end of the cylinder (406). The first timing pulley (106), the timing belt (107), and the second timing pulley (108) are all covered on their sides with a protective casing (111);
A connecting plate (112) is fixedly connected to the lower end of the protective casing (111);
The connection base (140) is attached to the upper end of the connecting plate (112);
The high power riveting power device without a reducer as claimed in claim 1, characterized in that the tension pulley (160) is in contact with a timing belt (107). A guide block (121) is fixedly connected to both sides of the main rod (120),
The high-power riveting power device without a reducer as claimed in claim 1, characterized in that the main rod (120) is inserted into the first transmission rod (201) and the second transmission rod (203). The second transmission rod (203) is provided with guide grooves (211) on both sides thereof,
The high-power riveting power device without a reducer as claimed in claim 4, characterized in that the guide block (121) is slidably connected inside the guide groove (211). A high-power riveting power unit without a reducer as described in claim 1, characterized in that an output spring (212) is attached inside the output head (205). 2. The high-power riveting power device without a reducer as claimed in claim 1, characterized in that a mounting block (311) is fixedly connected to the side of the vertical plate (301).